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    <title>Document</title>
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    <script>
        console.log("\u0061");
        console.log("\u4e01");

        var obj = {
            name:"lili",
            age:18
        }

        var jsonobj = {
            "name":"nana"
        }

        var str = JSON.stringify(obj);
        console.log(str);

        var obj1 = JSON.parse(str);
        console.log(obj1);



        function list(x,y = 10){
            console.log(x,y);
        }
        list(100,200)
    </script>
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